package com.bilibili.juc;

/**
 * @author 小泽
 * @create 2022-09-29  11:22
 * 记得每天敲代码哦
 */
public class cs {
       public static void main(String[] args) {
              String a = null;
              String b = "";
              System.out.println(a != null);
       }
}
